From ac73c5d4211b9ecff0f9650a032e964ef1cad585 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Fri, 12 May 2017 12:34:55 +0800
Subject: avoid `arguments` and `eval` in `reduce_vars` (#1924)

fixes #1922
---
 lib/compress.js | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

(limited to 'lib')

diff --git a/lib/compress.js b/lib/compress.js
index aff5c643..1ded032b 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -354,10 +354,14 @@ merge(Compressor.prototype, {
                         // So existing transformation rules can work on them.
                         node.argnames.forEach(function(arg, i) {
                             var d = arg.definition();
-                            d.fixed = function() {
-                                return iife.args[i] || make_node(AST_Undefined, iife);
-                            };
-                            mark(d, true);
+                            if (!node.uses_arguments && d.fixed === undefined) {
+                                d.fixed = function() {
+                                    return iife.args[i] || make_node(AST_Undefined, iife);
+                                };
+                                mark(d, true);
+                            } else {
+                                d.fixed = false;
+                            }
                         });
                     }
                     descend();
@@ -491,7 +495,9 @@ merge(Compressor.prototype, {
 
         function reset_def(def) {
             def.escaped = false;
-            if (!def.global || def.orig[0] instanceof AST_SymbolConst || compressor.toplevel(def)) {
+            if (def.scope.uses_eval) {
+                def.fixed = false;
+            } else if (!def.global || def.orig[0] instanceof AST_SymbolConst || compressor.toplevel(def)) {
                 def.fixed = undefined;
             } else {
                 def.fixed = false;
-- 
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<tr><td><span title='2021-01-11 23:55:28 +0100'>2021-01-11</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=ca8ac129a40aef6c05e8249ee131ff06c3851098'>gnu: sord: Update to 0.16.8.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-01-11 23:55:28 +0100'>2021-01-11</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=103b0ca3a7200664998bb7ef4d583ae18b5ecb57'>gnu: serd: Update to 0.30.8.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-10-02 00:30:43 +0200'>2020-10-02</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=1aa9f2cfde650d9164ea06b3a248a3fc8298271e'>gnu: sord: Update to 0.16.6.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-10-02 00:30:43 +0200'>2020-10-02</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=33214fe4cad0679afaff0a14007af970ebd8f518'>gnu: serd: Update to 0.30.6.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-08-29 14:26:23 -0400'>2020-08-29</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=4aaa27e4d2d9edbd919a1e87eb8e9c0feb895444'>gnu: Add hdt-cpp.</a><span class='msg-avail'>...</span></td><td>pukkamustard</td></tr>
<tr><td><span title='2020-08-09 15:33:03 +0300'>2020-08-09</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=ab04b2571771f2050fd9e3272bc1079c43e76f3e'>gnu: Add python-cfgraph.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2020-07-12 23:08:15 +0200'>2020-07-12</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=b0e7b6992f3f845e83cfbca4d700b51dba50b4d5'>gnu: Remove ".git" from "https://github/…/….git".</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>